热带作物学报2017，Vol.38Issue(10)：1811-1814,4.DOI:10.3969/j.issn.1000-2561.2017.10.007
假蒟提取物除草活性初探
Herbicidal Activity of Extract of Piper sarmentosum
摘要
Abstract
In an attempt to obtain novel botanical pesticides for weed control,the herbicidal activity of the extract of Piper sarmentosum was determined by seed germination and pot experiment methods.Among the 14 tested seeds,the extract exhibited the highest herbicidal activity against Echinochloa crusgalli,Amaranthus tricolor and Chloris virgata,with the inhibitions of shoot and root was 92.42％,90.91％,91.41％ and 81.15％,63.68％,87.94％,respectively.In addition,the extract inhibited the seeding growth process in a concentration-dependent manner,with EC50 values of inhibitons of shoot and root were 0.389,0.516,0.415 mg/mL and 0.429,0.611,0.478 mg/mL,respectively.Herbicidal activity assay in the pot experiment showed the extract could effectively control E.crusgalli and C.virgata at the concentration of 10 mg/mL,with the inhibition rates 79.85％ and 65.48％,respectively,which were not significantly differenr from those of decanoic acid.Thus,P.sarmentosum extract has interesting potential for the use in weed control program.关键词
假蒟/提取物/除草活性/稗草/苋菜/虎尾草Key words
Piper sarmentosum/extract/herbicidal activity/Echinochloa crusgalli/Amaranthus tricolor/Chloris virgata分类
农业科技引用本文复制引用
冯岗,陈敏,任承才,闫超,刘霞,叶火春,张静..假蒟提取物除草活性初探[J].热带作物学报,2017,38(10):1811-1814,4.基金项目
中央级公益性科研院所基本科研业务费(No.2016hzs1J017,No.2016hzs1J058) （No.2016hzs1J017,No.2016hzs1J058）
海南省重点研发项目(No.SQ2017SHZ0023) （No.SQ2017SHZ0023）
科技部重点研发项目(No.2017YFD0202103). （No.2017YFD0202103）
